查询词典 bootstrap

It compares two different estimation methods," two step subsample bootstrap" based on moment estimation and Maximum L ikelihood Estimation , according to their theoretical basis and computation procedures.

讨论了根据极值理论计算受险价值的两类不同的方法：基于矩估计的"两次子样试算法"和极大似然估计法，并给出了各自理论推导过程和计算步骤。

My bootstrap behaves rather unreliably if the user chooses to install Microsoft's components, but cancels them in the middle of the install.

我的引导行为，而不是不可靠的，如果用户选择安装微软的组件，但取消在他们中间安装。

In the combined trees, Archakebia is sister to Akebia with high bootstrap support.

小花鹰爪枫嵌套在野木瓜属内，并与西南野木瓜形成姐妹群。

Based on Kimura-2-Parameter(K2P) distance,bootstrapped NJ tree(1000 replicates) was generated from these 9 cytb gene sequences of Clupeidae fishes.

结果表明：(1)用Ne ighbour-Join ing法构建的分子系统树显示盖纹沙丁鱼属的3种鱼类形成一个单系类群，鲱属2种鱼类形成一个单系类群，它们的bootstrap支持率均为100%。

Results showed that planktonic Prorocentrum were assembled to onegroup while benthic Prorocentrum were assembled to another group. The percentagesof the bootstrap values were higher than 95%. The results demonstrated that theplanktonic and benthic Prorocentrum should belong to different genus. Furthermore, the resulting phlogenetic structure showed the percentages of thebootstrap values (98%-100%) of Alexandrium in NJ and ML trees were significantlevers and belong to one group, divergently with genus Gonyaulax.

通过分析 17 种甲藻 18S rDNA 序列构建的系统发育树，营浮游生活的原甲藻在显著水平上聚为一类，而底栖种聚为一类，统计置信度均高于 95％，底栖原甲藻和营浮游生活原甲藻在 NJ 树和 ML 树上均为两个分支，且底栖型的分异速度较浮游型迅速，该结果说明原甲藻属中浮游种和底栖种应分属于不同类群。

The results were summarized as follows:1 Four cpDNA trnL-F, matK, rbcL, and atpB sequences analysis The chloroplast trnL-F, matK, rbcL, and atpB sequences from 31 species representing nearly all genera of Fagales (sensu APG, 2003) were used to reconstruct the phylogeny of the order.

主要内容包括：1 基于四个叶绿体DNA序列的分析以金缕梅属Hamamelis和朴树属Celtis为外类群，对壳斗目几乎所有属的代表共31种植物的trnL-F、matK、rbcL和atpB序列进行了测定，通过四个序列单独和联合分析，得到如下结果：除rbcL基因树由于信息位点少而分辨率较低之外，壳斗目各科作为单系类群在各种分析中都得到了较强的bootstrap支持。

Gombay and 〓(1998)proposed two classes of estimators ofthe change point based on rank and investigated their limit properties.

Kokoszka and Steiuebach(2000)在经验过程的基础上，引入带有bootstrap权的经验过程，构造变点的检验统计量〓，其中〓，〓。

Secondly, there are bigger value at risk by Historical Simulation Method of risk-factors free, represented investitive net value are NT 10,000,000, maximum loss of 5﹪probability will greater than NT 2,816,827 or NT 2,344,946. So used considering VAR－Bootstrap of risk factors were more appropriated model, because model of considering risk factors were able to accurate estimate reality value at risk.

二、以未考量风险因子之历史模拟法及GARCH－拔靴法所估计风险值较大，表示投资净值一千万，有5﹪的机率可能的最大损失会大於2，816，827元或2，344，946元，因此，考量风险因子之VAR模型－拔靴法为较适当之模型，因有考量影响风险之因子，较能准确估计出实际之风险值。

Sardinella auritaandSardinella maderensisare monophyletic group,their bootstrapvalue reached or exceed 50%.

欧洲黍鲱与太平洋鲱和大西洋鲱是单系起源，其bootstrap支持率高达100%。

As the U.S. struggles to bootstrap itself out of one of the worst economies in decades, the federal government continues its spending spree, earmarking $787 million to biofuels.

由于美国的斗争，以引导本身的最严重的一次经济几十年来，联邦政府继续其挥霍，专款专用七万八千七百点零零万美元以生物燃料。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。